I'm Planing to sell my 1981 Cadillac fleetwood brougham..I need the blue book value for it can somebody help me ..Can send pictures :)

Try kbb.com or look at similar cars on autotrader.com

the latest it goes is 1996

Pick up a Hemmings Motor News and look at what they are going for and in what condition.

http://www.cadillacforums.com/forums/attachment.php?attachmentid=17780&stc=1&d=1140221668

Okay, try: http://nada.com/
And go to their "classic" section. They list cars older than 1986 there.